Last night's X Factor UK finale was undeniably one of television's biggest broadcasts of the year, bringing together an incredible amount of all-star guests for a series of stunning performances. Adele turned out "Hello" and One Direction performed an emotional rendition of "History" as a final goodbye before their hiatus. Leona Lewis, Rod Stewart, Nick Grimshaw, and Rita Ora all also performed—some alongside their respective finalists.

In one show-stopping collaboration, Fleur East and Little Mix teamed up to perform a mashup of their respective hit singles "Sax" and "Black Magic." Their collaboration was more than fitting for the finale show, considering they both got their big break on the show in previous seasons: Little Mix as the winners in 2011 and Fleur East as last year's runner-up. You can watch a clip of the performance over at Daily Mail UK.

Perrie Edwards, Jesy Nelson, Leigh-Anne Pinnock and Jade Thirlwall wore red and black outfits that combined leather with various amounts of fringe. Fleur East, on the other hand, rocked a gold and fringed ringleader-inspired leotard that wowed the audience. Their performance kicked off with Little Mix's "Black Magic" before transitioning into Fleur's debut single "Sax." The girls belted out the others' hits, giving each song an even greater energy.

So much so that even Simon Cowell got out of his seat.

This was not the first time either Fleur East or Little Mix have performed on this year's season of X Factor UK, though: Fleur previously performed "Sax," and Little Mix performed a medley of "Love Me Like You" and "Black Magic" back in November.

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